ashballan wrote:
the document root in XAMPP is “C:/XAMPP/htdocs” and the app is under “C:/XAMPP/htdocs/NW_2021/”
https://discourse.hkvstore.com/t/migrating-to-v2022/655/1 mentions RewriteBase, you may read again.
You may also click Tools → Advanced Settings, find “RewriteBase directive”, try to enter /NW_2021 or “/NW_2021” (with or without quotes, depending on web server, you may try one by one, some web server does not need it) and try again.